goat3dgfx: src/gfxutil.cc annotate

goat3dgfx

annotate src/gfxutil.cc @ 9:25b911c7c35c

fixed some line endings fixed the cubemap2.jpg file in examples/cubemap/data which was resized improperly causing seams...

author	John Tsiombikas <nuclear@member.fsf.org>
date	Mon, 18 Nov 2013 04:10:19 +0200
parents
children	7d6b667821cf

rev	line source
nuclear@0	1 #include <assert.h>
nuclear@0	2 #include "gfxutil.h"
nuclear@0	3 #include "mesh.h"
nuclear@0	4 #include "meshgen.h"
nuclear@0	5 #include "texture.h"
nuclear@0	6 #include "shader.h"
nuclear@0	7 #include "sdrman.h"
nuclear@0	8 #include "opengl.h"
nuclear@0	9 #include "logger.h"
nuclear@0	10
nuclear@0	11 void draw_rect(const Vector3 &v1, const Vector3 &v2, Texture2D tex, ShaderProg sdr)
nuclear@0	12 {
nuclear@0	13 static ShaderProg *defsdr;
nuclear@0	14
nuclear@0	15 if(!defsdr) {
nuclear@0	16 if(!(defsdr = get_sdrprog("defpost.v.glsl", "defpost.p.glsl"))) {
nuclear@0	17 static bool didlog;
nuclear@0	18 if(!didlog) {
nuclear@0	19 error_log("draw_rect: failed to load default shader\n");
nuclear@0	20 didlog = true;
nuclear@0	21 }
nuclear@0	22 if(!sdr) {
nuclear@0	23 return;
nuclear@0	24 }
nuclear@0	25 }
nuclear@0	26 }
nuclear@0	27
nuclear@0	28
nuclear@0	29 if(tex) {
nuclear@0	30 set_texture(tex);
nuclear@0	31 }
nuclear@0	32 if(sdr) {
nuclear@0	33 sdr->bind();
nuclear@0	34 } else {
nuclear@0	35 defsdr->bind();
nuclear@0	36
nuclear@0	37 assert(defsdr->get_attrib_location("attr_vertex") == MESH_ATTR_VERTEX);
nuclear@0	38 assert(defsdr->get_attrib_location("attr_texcoord") == MESH_ATTR_TEXCOORD);
nuclear@0	39 }
nuclear@0	40
nuclear@0	41
nuclear@0	42 float varr[] = {
nuclear@0	43 v1.x, v1.y, v1.z, v2.x, v1.y, v2.z,
nuclear@0	44 v2.x, v2.y, v2.z, v1.x, v2.y, v1.z
nuclear@0	45 };
nuclear@0	46 static const float tarr[] = { 0, 0, 1, 0, 1, 1, 0, 1 };
nuclear@0	47 static const unsigned int idxarr[] = {0, 1, 2, 0, 2, 3};
nuclear@0	48
nuclear@0	49 // disable VBOs if they are enabled
nuclear@0	50 glBindBuffer(GL_ARRAY_BUFFER, 0);
nuclear@0	51 glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
nuclear@0	52
nuclear@0	53 glEnableVertexAttribArray(MESH_ATTR_VERTEX);
nuclear@0	54 glVertexAttribPointer(MESH_ATTR_VERTEX, 3, GL_FLOAT, GL_FALSE, 0, varr);
nuclear@0	55 glEnableVertexAttribArray(MESH_ATTR_TEXCOORD);
nuclear@0	56 glVertexAttribPointer(MESH_ATTR_TEXCOORD, 2, GL_FLOAT, GL_FALSE, 0, tarr);
nuclear@0	57
nuclear@0	58 glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, idxarr);
nuclear@0	59
nuclear@0	60 glDisableVertexAttribArray(MESH_ATTR_VERTEX);
nuclear@0	61 glDisableVertexAttribArray(MESH_ATTR_TEXCOORD);
nuclear@0	62
nuclear@0	63 set_texture(0);
nuclear@0	64 }